Ivana Racetin

Minimum Data Collection Dimensions in Topographic Information Systems

Abstract An overview is presented of the main subjects connected with topographic information systems, such as feature objects, object generalisation, acquisition criteria and minimum dimension. The ISO 19110 standard and INSPIRE initiative are explained in relation to minimum dimensions and data collection. The main section of the article refers to experiences in criteria acquisition within ATKIS and STOKIS. These are shown in mutual comparison and in comparison with solutions in classical cartography. The problem of minimum collecting dimensions of buildings is given special treatment. Adequate solutions to this problem are offered on the basis of research conducted. Experiences in treating linear and area features and how to select minimum collecting dimensions for the purpose of achieving optimal results are also presented. The research results are applicable in countries attempting to create their own topographic information system, or wanting to produce a new edition of their feature catalogue, as is the case in Croatia.

A discussion for integrating INSPIRE with volunteered geographic information (VGI) and the vision for a global spatial-based platform

INSPIRE is the EU’s authoritative Spatial Data Infrastructure (SDI) in which each Member State provides access to their spatial data across a wide spectrum of data themes to support policy making. In contrast, Volunteered Geographic Information (VGI) is one type of user-generated geographic information where volunteers use the web and mobile devices to create, assemble and disseminate spatial information. There are similarities and differences between SDIs and VGI initiatives, as well as advantages and disadvantages. Thus, the integration of these two data sources will enhance what is offered to end users to facilitate decision makers and the wider community regarding solving complex spatial problems, managing emergency situations and getting useful information for peoples’ daily activities. Although some efforts towards this direction have been arisen, several key issues need to be considered and resolved. Further to this integration, the vision is the development of a global integrated GIS platform, which extends the capabilities of a typical data-hub by embedding on-line spatial and non-spatial applications, to deliver both static and dynamic outputs to support planning and decision making. In this context, this paper discusses the challenges of integrating INSPIRE with VGI and outlines a generic framework towards creating a global integrated web-based GIS platform. The tremendous high speed evolution of the Web and Geospatial technologies suggest that this “super” global Geo-system is not far away.

Feature Definitions in Feature Catalogues

Abstract First, an overview of the main terms used in the paper is presented, such as feature catalogue, object, feature, and so on. Then INSPIRE (INfrastructure for SPatial InfoRmation in Europe) Directive, STOKIS (Službeni topografski i kartografski informacijski sustav RH), ATKIS (Amtliches topographisch-kartographisches Informationssystem) and FACC (Feature and Attribute Coding Catalogue) are explained. The main section of the paper refers to the problem of defining features in feature catalogues. Adequate solutions to this problem are offered on the basis of conducted research. An overall acceptable model for feature definition is offered. The importance of the proposed model for defining features is explained on the feature ‘avenue of trees’. The research results are applicable in countries attempting to create their first feature catalogues with the aim of developing a topographic information system, or in those wanting to produce a new edition of their existing feature catalogue. Since the suggested model is included, it can be used for the future development of the INSPIRE feature.

Minimum mapping units in topographic information systems: a case study from Croatia

Abstract The paper discusses the minimum mapping units used in topographic information systems of scale of 1∶25u2009000. It refers to experience in data acquisition based on given criteria within ATKIS, traditional Croatian topographic maps and STOKIS. The emphasis is given to forest and arable land minimum mapping units (MMU). More adequate MMU is recommended on the basis of research conducted. The model can also be used for other topographic information system scales. The research results are applicable in countries attempting to create their own topographic information system, or wanting to produce a new edition of their object catalogue, as is the case in Croatia.